Adjustable tire-rim.



R. 8. ALTENBURG.

ADJUSTABLE TIRE Rll\lh- APPLICATION men ozc. 2a, 1916. RENE WED SEPT. 15. en.-

REINI-IR' IB. ALTENIBURG2 DAVENPORT, IOWA.

LDJUSTAIBLE TIBE-BIM.

T0 aZZ wh0m it mag concern BURG, 1 citizen 0 the nited Stzites residin 7 b at DIYGDPO1 in the county of Scott and State of Iowa, have invented certain new and usefu1 unprmements in an Adjustable Tireli1n; and 1 de hereby deeiare the followingto be a u11, ciear, and exact deseripti0n 01 the invention, such as Wi1i enable others skilied in the art te which itzippertains to make nd use the same.

This invention reiates te L vehicle tire and 1in1 eonstruction and more pertculariy to an adjusteble tire ri1n.

The prineipnl object of tbis iniention is to position a rubber fi11e1 within the 0idi-;

nery pneumatic tire casingand to provide an adjustable rim designed to coperate with the inner edges of the tire casing, whereby the compression of the rubber fi11e1 may be -varied at Wi1i, whieh compression is designed to control the standing up of the tire casing under a i0ad.

Another object of the invention is to pro vide a tire rirn carrying L pair of retaining rings, one of said retaining rings being ad justabie iateraily of the ri1n, zuid ineens for edjusting the ring iateraliy to draw the inner beaded edges of the tire casing toward each other.

A further object of the invention is to rovide means Whereby the compression of the rubber fi11er may be quiekly and readily increased 01 decreased 2ind locked in such adjusted position.

With these and ether objects in view as Wi11 appear as the description proceeds, the invention comprises the various nove1 features of construction combination and arrangement of parts as will be more ;Eu11y desc1ibed hereinafter and set 0rth with partieularity in the appended claims.

Referring to the drawings,

Figure 1 is a side elevation of my improved tire rim with a tire shown in position thereon, the rim being p0sitioned upon the whee1.

Fig. 2 is a vertical transverse sectional view through my improved rim, showing a pneumatic tire casing attached thereto and having a rubber fi11er positioned therein.

Fig. 3 is a sectional perspective view of my improved rim construetion.

Simi1ar characters of reference are used to denote like pa;rts throughout the accom- Speeificetion of Letters Patent. }P&e5ni5e pr. 23, 119118. Applicaton fi1ed December 23, 1916, Sl No. 138622. Renewed September 15, 1917. Serial I\0. 101,651.

panying drawings" and the iollowing deseription.

Refeiring 1nc re particuierb; to the drawings, the reference numeral1 indieates en 01 dinary pneu1natic tire casing that is provided with the usual construction of beeds 2 whieh extend inwa rd1y of the cesing and terminate at the inner oppsed edges 3 of the casing. Positioned within this tire csing 1 is a rubber 1i11e1 4, which is designed to be 0011- structed of a particular comp0sition so as to give it a maximum amount of drnrabiiity and resiliency.

'1he tire easing is positioned upon the tire rim 5- Which is provided at ihe outer side with 2m inset fiange 6 that is designed to receive and retain in position s locking ring 7. The inner circumi'erential edge of'the ri1n 5 is formed with an outwerdly extending eireuxnferentiai flange 8 which is previded circ1nniferentinlly with a series 0 spacedt-1ireaded a pertures 9 through eaeh of which extendsan adjusting screw 10 that is designed to 'bei0eked in sny desiied adjusted position tbrough-the flenge by a look nut 11. Each of these edjustii1g serews 10 is iovided a-t 0ne end With al head 12 and has its opposite er inner end rounded as indieated at 13.

This inner rounded end of each of. the screws 10 is designed to beer against the inner bead engaging ring 14 or in depressions er u eircinnferentiaiiy extending recess 15.

This inner ring 14 is siidabiy 1nounted transversely of tbe ri1n. on tbe 0uter circumference there0f, end positioned upon the opposite side of the rin1 is en enter bead engaging ring 16 that is designed to beer egainst the locking ring 7.

111 order to assemble and position L ti1e upon the ri1n, the adjusting screws 10 zure moved outwardly so that the tire casing with the rubber fi11er therein een be easiiy and quiek1y positioned upon the rirn etter which the outer ring 16 end tbe iocking ring 7 are arrenged in position t0 held the tire in piace. This having been done, the adjusting serews 10 are screwed inwardly s0 as to move the inner bead engaging ring 14 transverseiy of the ri1n, this inner move- 1nent of the ring 14 regulating the amount of eompression that is p1aeed upon the rubbei fi11er 4, which in turn regulates the standing up of a tire under {L 10ad. When the desired eompression has been plaeed 

